I need to integrate Gal1 promoter in front of CDC48p. The problem is that i dont know the right carbon source to include on my G418 plate. I have tried varying concentration of Glucose and Galactose on the plate. After transformation I did see some little colonies but none contain my insert. I tried with other different concentration, unfortuantely no colony appear after three days of transformation. Like I said the problem is either using a combination of Galactose and Glucose or Galactose alone and at what concentration should they be in the plate and in the media. Please help me out.